The Bug

Sometimes when jungle pyramids generate near trees, it's possible that a part of the tree. When looking at one of the leaves inside and pressing F3, it shows distance:7 even though it has no conection to the tree.
(When I made the 4th screenshot, one of the 2 leaf blocks had disappeared and I saw when the last leaf block disappeared)
How to reproduce:

Find a jungle pyramid. There's not a 100 percent chance the bug occurs.
Notice how the leaves are not connected to the logs.